Liamond, a rebel jailed several years ago for a bombing incident, is being released and is on his way to a new job in Scotland. Secret agent John Drake suspects Liamond's future employer, Crawford, is up to no good, and takes his place as the new employee. Drake discovers that Crawford has been running a base for Irish rebels from what appears to be a highly-guarded bird sanctuary. Things go awry when Crawford announces an old friend of Liamond's will be arriving, and John Drake, fearing his cover will be blown, takes a drastic step to salvage the mission.